1. The concept of interconversion of states illustrates how substances can transition between solid, liquid, and gas states through physical changes such as melting, freezing, and boiling. These changes do not alter the substance's chemical composition, only its physical state.

    The concept of interconversion of states illustrates how substances can transition between solid, liquid, and gas states through physical changes such as melting, freezing, and boiling. These changes do not alter the substance’s chemical composition, only its physical state.

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  2. Physical properties of matter are characteristics that can be observed or measured without altering the substance's chemical composition, such as color, density, melting point, boiling point, and conductivity.

    Physical properties of matter are characteristics that can be observed or measured without altering the substance’s chemical composition, such as color, density, melting point, boiling point, and conductivity.

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  3. Changes in state are considered physical changes because they involve alterations in a substance's physical form (solid, liquid, gas) without changing its chemical composition. No new substances are formed during these transitions.

    Changes in state are considered physical changes because they involve alterations in a substance’s physical form (solid, liquid, gas) without changing its chemical composition. No new substances are formed during these transitions.

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  4. John Tyndall was a 19th-century Irish physicist known for his work on light scattering. The Tyndall effect is named after him because he extensively studied and described the scattering of light by colloidal particles in solutions and suspensions.

    John Tyndall was a 19th-century Irish physicist known for his work on light scattering. The Tyndall effect is named after him because he extensively studied and described the scattering of light by colloidal particles in solutions and suspensions.

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  5. The Tyndall effect helps detect particles in the air by causing them to scatter light. When light passes through a medium containing particles (like dust or smoke), it scatters, making the particles visible and aiding in their detection.

    The Tyndall effect helps detect particles in the air by causing them to scatter light. When light passes through a medium containing particles (like dust or smoke), it scatters, making the particles visible and aiding in their detection.

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